As @ahartmetz said: > QML is absolutely not JavaScript. It's a markup language to describe user interfaces, spiced with JS for certain interactions. All heavy

As @ahartmetz said: > QML is absolutely not JavaScript. It's a markup language to describe user interfaces, spiced with JS for certain interactions. All heavy lifting behind the scenes is done in C++ - the QML runtime as well as the application logic and data models. How's QML useless? It's incredible language for UI. I described how I developed my Block Editor (like Notion) in Qt QML and C++: https://rubymamistvalove.com/block-editor https://rubymamistvalove.com/block-editor